<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>实验6</title>
    <style>
        body{
            margin: auto;
            padding: 0px;
        }
        .web{
            width: 950px;
            height: 1000px;
            background-color: #cecece;
            border: #666666 1px solid;
            margin: 0px auto;
            position: relative;
        }
    </style>
</head>

<body>
    <div class="web"></div>
    
</body>
<script type="text/javascript" src="./ad_lr.js"></script>
</html>